Patents by Inventor Takeshi Morokuma

Takeshi Morokuma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for producing tricyclodecanecarboxylic acid esters
    Patent number: 4973740
    Abstract: A process for producing a tricyclodecanecarboxylic acid ester by reacting dihydrodicyclopentadiene with CO and an alcohol in the presence of anhydrous HF is disclosed. The reaction is performed in a solvent at a temperature of from -20.degree. to 60.degree. C. under a CO partial pressure of from 5 to 50 atm. The alcohol is used in an amount of 0.7 to 5 moles per mole of the dihydrodicyclopentadiene. The anhydrous HF is used in an amount of at least 5 moles per mole of the dihydrodicyclopentadiene. The product tricyclodecanecarboxylic acid ester is useful as a flavor.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: November 27, 1990
    Assignees: Mitsubishi Gas Chemical Co., Inc., Kao Corporation
    Inventors: Masami Ishihara, Takeshi Morokuma